High-Brightness Multimode Fiber Lasers for Resonant Pumping

作者：Kotov Leonid V^*; Aleshkina Svetlana S; Khudyakov Maksim M; Bubnov Mikhail M; Medvedkov Oleg I; Lipatov Denis S; Guryanov Aleksei N; Likhachev Mikhail M

来源：Journal of Lightwave Technology, 2017, 35(20): 4540-4546.

DOI：10.1109/JLT.2017.2748924

• Doped fiber amplifiers
• fiber lasers
• high power amplifiers
• pump lasers

We present multimode fiber lasers for tandem pumping of high power Er-, Tm-, and Yb-doped lasers. These pump sources are based on especially developed multimode Er-and Ybdoped double-clad fibers. Er-doped lasers with record pump conversion efficiency > 48% at 1565 nm and more than 41% at 1535 and 1590 nm were realized. Yb-doped fiber laser at 1020 nm with record high 85% pump conversion efficiency was demonstrated. Also, we propose novel design of compact and cost-effective multimode laser scheme. The potential of power scaling of proposed lasers to the 1-10-kW level and their advantages as resonant pump sources are discussed.

• 出版日期2017-10-15